package io.joyrpc.extension.condition;

/*-
 * #%L
 * joyrpc
 * %%
 * Copyright (C) 2019 joyrpc.io
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.lang.annotation.Annotation;

/**
 * 类不存在判断
 */
public class OnMissingClassCondition implements Condition {
    @Override
    public boolean match(final ClassLoader classLoader, final Class clazz, final Annotation annotation) {
        ConditionalOnClass onClass = (ConditionalOnClass) annotation;
        for (String name : onClass.value()) {
            if (name != null && !name.isEmpty()) {
                try {
                    Class.forName(name, false, classLoader);
                    return false;
                } catch (ClassNotFoundException e) {
                }
            }
        }
        return true;
    }
}
